Solved UPSC CDS/OTA Question
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Q · Waves and SoundEasy · 45s
An example of a non-mechanical wave is: 277
TopicWaves and Sound
Question Typemultiple choice
DifficultyEasy
Marking+1 / −0.33
Test Duration30 min
Step-by-Step Solution
The complete worked solution.
Every step explained - no skipped algebra.
Light does not need a material medium — an electromagnetic wave.
285
Final Answer: Option C - Light wave
282